Artificial tooth



Feb. 17. 1925. 1 1 1,527,066

C. G. PAPA NT ARTIFICIAL TOOTH original Filed June 1e.' 1921 2 sheets-sheet 1 www1-@220% Feb. 17. 1925. 1,527,066

C. G PAPANT IIIIIIIIIIIII TH Original Fi llllllll 6 Patented Feb. 17, '1925.

citarse eff. rereivr, or clarence, ILLrivoIs.

Anrrrrcmt Toorn.

Original application filed June 16, 1921, Serial No. 478,009. Divided and this application led May 8, 'i 1922# Serial No. 559,194=,

Tooll whom t may concern.'

'Be vit known that l, Cr-nu's'r liwnn'r, a citi7en` i of the" United' States, `residing at Chicago, county of Cook, and State of Illinois, have"in`vente d a new and useful Improvement iniirtiicialTeeth, of which thefollowing is a specification:

"This" invention relates to dentistry, and more particularly pertains to 'improvements in artificial teeth, especially where employed for 'bri'dgework As is well known to those skilled inA the art, two methodshave, inthe past, been employed forreproducing a plaster cusp in gold, y1'ia1'nely',"loy the swaging method, or by casting. The former is by far the more popular, andmypr'esent invention is directed twa'rdand Jhas as its primaryhim the'improveme'nt of this method, by rendering it poss'ible'to more quickly and accurately form the gold cusp and tooth contour where both are to be of gold, or to facilitate the construction of the cusp for use'on a tooth having a porcelain facinof.

Previously, in 'theswaging method, the operator took an impression of the abutment teeth' or those immediately adjacent to the teeth which were "supplied to bein a bridge, for' the purpose of making a model from which to form the artificial bridge, this impression being-` made' in plaster and reproduced in relief and placed in an articulator, on which latter'ithe" bridge is plotted and laid out so that the proper occlusion may be obtained.

In forming the cusp, considerable time was consumed, as it has been necessary under the old method to make a die, and furthermore where two or more teeth form the bridge, the separate cusps and facings had to be connected by solder in addition to their connection to the solder filling or to the coping or band. Under my present method and with the means provided I eliminate the double-soldering preferably forming the cusp integrally with the gold buccal, in one instance, and also making it possible, if desired, to make two or more adjacent cusps or cusps and buccal surfaces of a single stamping.

The principal objects and advantages which characterize this invention reside in the provision of an improved sheet metal tooth embodying a cusp and buccal portion; the provision of an artificial tooth of sheet metal having an integral cusp and buccal portion; the provision of an artificial tooth comprising the cusp and buccal portion formed of a single sheet of metal; the provision of an artificial tooth having an' integral cusp and buccal portion; the provision of an improved artificialtootli emi bodying a body of solid material and a facing comprising an integral sheet providing the cusp and buccal portions of the tooth; the provision of artificial teeth comprising a plurality of'integral cusp and buccalportions formed of a. single piece; the provision of artificial teeth for bridge-work embodying a series of integral cusp and buccal portions conforming tothe shape and sizeof the teeth to be reproduced; and the provision of an article embodying the features referred to which materially reduces the expenditure of labor and time previously involved in constructing bridges, whereby to attain a neater and'more accurate job and to reduce the cost.

This invention is a ydivisionA or continuation in part of ymy o o-pending application for United States Letters Patent Serial Number 478,009.

The foregoing and such other objects and advantages as may appear or be pointed out as this description proceeds are attained in one structural embodiment illustrated in the accompanying drawing, in which:

Figure l is a perspective view of the article of this invention.

Figure Q is a sectional view of the same.

Figure 3 is an elevational view of an articulator with the article of this invention supported there-on.

Figure l is a sectional view of an impression supported by an articulator with the article of this invention in use.

Figure 5 is a view of the tooth ready for insertion in the articular.

Figure 6 illustrates two views of the arti cle employed in a porcelain or other faced tooth.

Figure 7 is a sectional view of two porcelain faced teeth employing this invention.

Figure 8 is a sectional view of dies.

Figure 9 is a perspective view of a stamping for the cusps.

Referring more particularly to the drawing, and first to Figs. l, 2, and S, there are shown the various stages of construction of an artificial tooth., when carried out cordance with this invention. A pair of die elements 5 and 6 are provided, preferably constructed similarly to the dies described and claimed in the aforesaid copending application, said die members having complemental projections 9 and depressions 10, respectively, conforming to the shape and size of human teeth. A sheet 11 of gold or other metal from which the tooth is formed is inserted between the dies and the pressure applied to the latter. `When the sheet of metal is removed there is provided an artificial housing for the bridge teeth which takes the form shown in Figs. l and 2, or any other form depending upon the particular tooth reproduced.

As shown in Figs. 1 and 2, the product of the dies comprises the casing embodying the cusp 7 and buccal portion 8. This product, which, as seen in Fig. 1, may embody any desired number of contiguous teeth, is then filled with mounting wax 12, and placed in the proper relationship to the plaster abutment teeth 13e-13 on the articulator 14, the latter being of the conventional style, whereupon the bridge thus in process of construction is ready for maniuplation to attain proper occlusion. In Fig. 1, the tooth section of this invention is shown applied in position for the melting out step, this step being carried forward in the usual manner. Figure 5 illustrates the unit filled with wax and ready for insertion into the impression 15--15 illustrated in Fig. 41.

As previously pointed out, it has been necessary under the old method of forming gold cusps for bridgework, to form the cusp and buccal portions of the tooth separate and when assembling, to connect these two portions by soldering. In view ofthe fact that great skill and considerable time are required for connecting these parts, together with the finishing process, this class of work is expensive. Furthermore, as the body of the tooth later applied is of solder, thereis great danger of spoiling the joint between the cusp and buccal of the tooth. My invention reduces not only the work and time necessary, but also makes a smoother and more finished product in gold. The same results are obtainable in the event that a porcelain facing is employed.

Upon reference to Fig. 9, a pair of cusps 16-16 are shown, this stamping being employed in connection with a tooth'having a porcelain facing, such a tooth being illustrated in Fig. 6, wherein the cusp 16 is secured to a gold supporting plate 17, the product filled with wax and the porcelain facing 18 secured in the conventional manner by pins 19. Fig. 7 is an illustration of the employment of a double facing of porcelain. If desired, the cusp 16 may be integral with the supporting plate 17.

Any variations of the die, the shape of the operating parts thereof, number of teeth to be formed, and the particular shape, location and size may be made, it, of course, being desirable that the operator keep` on hand a. number of dies such as that shown for the various teeth found to be necessary.

Minor changes, such as are enumerated above, may be made in the details without departing from the spirit of the invention and scope of the claim.

I claim:

As an article of manufacture, an artificial tooth comprising a sheet of metal formed to provide a cusp and a metal plate contiguous to and integral with an edge por tion of said cusp metal, and a porcelain facing supported by said plate.

In testimony whereof, I afx my signature in the presence of two witnesses at 36 WT. Randolph St., Chicago, Illinois.

CHRIST G. PAPANT. Witnesses:

DANIEL A. BRENNAN, VIRGINIA DURDY. 

